203402341123 has 2 divisors, whose sum is σ = 203402341124. Its totient is φ = 203402341122.

The previous prime is 203402341111. The next prime is 203402341187. The reversal of 203402341123 is 321143204302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203402341123 - 2²¹ = 203400243971 is a prime.

It is a super-2 number, since 2×203402341123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203402741123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101701170561 + 101701170562.

It is an arithmetic number, because the mean of its divisors is an integer number (101701170562).

Almost surely, 2^203402341123 is an apocalyptic number.

203402341123 is a deficient number, since it is larger than the sum of its proper divisors (1).

203402341123 is an equidigital number, since it uses as much as digits as its factorization.

203402341123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 203402341123 its reverse (321143204302), we get a palindrome (524545545425).

The spelling of 203402341123 in words is "two hundred three billion, four hundred two million, three hundred forty-one thousand, one hundred twenty-three".